Is cached data important? Cached data isn't inherently important, as it's only considered “temporary storage.” However, it does exist to improve the user experience. On-page elements like images, videos, and even text take some time to load. ... Without cache, everything would need to reload.

Should you delete cache files?

On modern versions of Android, you need to delete the cache files for each app individually. Note that you rarely need to delete all cache across your device. In most cases, clearing the cache from a few problematic apps can resolve storage or performance issues.

Is deleting cache files bad?

When should you do it? Clearing cache is always meant to be a temporary fix as every app you use will start populating the storage with files after clearing it. Despite its benefits, clearing it too often can become a pointless activity as it defeats the purpose of improving load times.